.box ul {
  background-color: #ddd;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  width: 33.333%;
  transition: all 1s linear;
  opacity: 0;
  min-width: 300px;
  display: flex;
}
.box ul li {
  width: 33.333%;
  padding: 10px;
}
